Home / 430,534.56-645,802.38-205,842.18

Finding the Fourth Proportional to 430,534.56, 645,802.38 and 205,842.18

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Solution

The fourth proportional to 430,534.56, 645,802.38 and 205,842.18 is: 308,763.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,534.56 : 645,802.38 = 205,842.18 : x
  2. Step 2: Convert to fraction form
    430,534.56/645,802.38 = 205,842.18/x
  3. Step 3: Cross multiply
    430,534.56x = 645,802.38 × 205,842.18
  4. Step 4: Simplify right side
    430,534.56x = 132,933,369,748.39
  5. Step 5: Solve for x
    x = 132,933,369,748.39/430,534.56
  6. Step 6: Final answer
    x = 308,763.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.